> I heard the 3000 is very stable on XP however the 5000 has issues on WIN 7 with
> stability... also people have stated that XP is the way to go for stability and
> performance again depending of CPU and PC build.
XP is *never* the way to go for performance; best performance for Windows is always achieved with 64-bit MAME running on 64-bit Windows 7. I understand that it's challenging to use that setup with 15 kHz monitors, but on an absolute basis you cannot beat it for MAME performance.